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Versions: 6
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Stored size: 1.34 KB
Contents
module Vedeu
module Editor
# Fetches an item from a collection.
#
# @api private
#
class Item
# @param (see #initialize)
# @return (see #by_index)
def self.by_index(collection, index = nil)
new(collection, index).by_index
end
# Returns a new instance of Vedeu::Editor::Item.
#
# @param collection [Vedeu::Editor::Line|Vedeu::Editor::Lines]
# @param index [Fixnum]
# @return [Vedeu::Editor::item]
def initialize(collection, index = nil)
@collection = collection
@index = index
end
# @return [String|Vedeu::Editor::Line]
def by_index
return nil unless size > 0
if index.nil? || index > size
collection[-1]
elsif index > 0 && index <= size
collection[index]
else
collection[0]
end
end
protected
# @!attribute [r] collection
# @return [Vedeu::Editor::Line|Vedeu::Editor::Lines]
attr_reader :collection
# @!attribute [r] index
# @return [Fixnum]
attr_reader :index
private
# Returns the size of the collection or 0.
#
# @return [Fixnum]
def size
if collection
collection.size
else
0
end
end
end # Item
end # Editor
end # Vedeu
Version data entries
6 entries across 6 versions & 1 rubygems